Awww... I really hate to hear that you got tangled in the red tape of curriculum bulstuff.... Get a good advisor in ur field, the courses you have taken will probably help fill in other requirements..... Do NOT Fret over this, it is very common, and is not unusual for it to happen. The important thing is to find a prof in the field that you trust and have him/her guide you. The grief will go away and you can once again FOCUS on your intended field.........
gotta take responsibility for what u took and what happened, ya cannot place blame..... Be Strong and stand up for what you want to do.... you'll be OK..... have faith.... be strong...